KNOWLES CORPORATION Insider Trading Activity

Insider Trade Summary

Exercise and Sale: 56,130 shares ($191K approx. pre-tax spread)

Exercise and Sale 8 txns

Insider PERNA ROBERT J

Role SVP, General Counsel & Sec

Sold 56,130 shs ($1.15M)

Approx. gross sale proceeds $1.15M

Approx. exercise cost $958K

Approx. pre-tax spread $191K

Type	Security	Shares	Price	Value
Exercise	Non-Qualified Stock Option (right to buy)	29,412	$16.77	$493K
Exercise	Non-Qualified Stock Option (right to buy)	26,718	$17.39	$465K
Exercise	Common Stock	26,718	$17.39	$465K
Sale	Common Stock	26,718	$20.4724	$547K
Exercise	Common Stock	29,412	$16.77	$493K
Sale	Common Stock	29,412	$20.4724	$602K
Gift	Common Stock	9,221	$0.00	$0.00
Gift	Common Stock	9,221	$0.00	$0.00

Holdings After Transaction: Non-Qualified Stock Option (right to buy) — 0 contracts (Direct); Common Stock — 66,552 shares (Direct); Common Stock — 9,221 shares (Indirect, by Trust)

Footnotes (1)

1. F1. Not applicable to this transaction

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Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 07/29/2025 - 06:14 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

PERNA ROBERT J

(Last) (First) (Middle)

1151 MAPLEWOOD DRIVE

(Street)

ITASCA IL 60143

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Knowles Corp [ KN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP, General Counsel & Sec

3. Date of Earliest Transaction (Month/Day/Year)
03/20/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/20/2025		G		9,221	D	(1)	66,552	D
Common Stock	07/28/2025		M		26,718	A	$17.39	93,270	D
Common Stock	07/28/2025		S		26,718	D	$20.4724	66,552	D
Common Stock	07/28/2025		M		29,412	A	$16.77	95,964	D
Common Stock	07/28/2025		S		29,412	D	$20.4724	66,552	D
Common Stock	03/20/2025		G		9,221	A	(1)	9,221	I	by Trust

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Non-Qualified Stock Option (right to buy)	$16.77	07/28/2025		M			29,412	02/10/2021	02/09/2027	Common Stock	29,412	$16.77	0	D
Non-Qualified Stock Option (right to buy)	$17.39	07/28/2025		M			26,718	05/13/2020	02/12/2026	Common Stock	26,718	$17.39	0	D

Explanation of Responses:

1. Not applicable to this transaction

	By: Robyn B. Martin For: Robert J. Perna	07/29/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.